1.pom.xml
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.3.1.RELEASE
com.taotao
datasources_ds
0.0.1-SNAPSHOT
datasources_ds
Demo project for Spring Boot
1.8
org.springframework.boot
spring-boot-starter-web
log4j
log4j
1.2.17
org.projectlombok
lombok
org.springframework.boot
spring-boot-starter-aop
org.apache.commons
commons-lang3
com.baomidou
mybatis-plus-boot-starter
3.3.2
mysql
mysql-connector-java
com.alibaba
fastjson
1.2.62
com.baomidou
dynamic-datasource-spring-boot-starter
3.1.0
org.springframework.boot
spring-boot-starter-test
test
org.junit.vintage
junit-vintage-engine
org.springframework.boot
spring-boot-maven-plugin
2,yml配置：
spring:
datasource:
dynamic:
primary: itmayidu-order #设置默认的数据源或者数据源组,默认值即为master
strict: false #设置严格模式,默认false不启动. 启动后在未匹配到指定数据源时候回抛出异常,不启动会使用默认数据源.
datasource:
##会员的数据库
itmayidu-order:
url: jdbc:mysql://localhost:3306/itmayidu-order?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2B8
username: root
password: root
driver-class-name: com.mysql.cj.jdbc.Driver
###订单数据库
itmayidu-stock:
url: jdbc:mysql://localhost:3306/itmayidu-stock?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2B8
username: root
password: root
driver-class-name: com.mysql.cj.jdbc.Driver
logging:
level:
###打印mybatis日志
com.taotao.datasources_ds : debug
3,启动类
package com.taotao.datasources_ds;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@MapperScan(basePackages = {"com.taotao.datasources_ds.stock.mapper","com.taotao.datasources_ds.order.mapper"})
@SpringBootApplication
public class DatasourcesDsApplication {
public static void main(String[] args) {
SpringApplication.run(DatasourcesDsApplication.class, args);
}
}
4，实体类
package com.taotao.datasources_ds.order.entity;
import java.time.LocalDateTime;
import java.io.Serializable;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import lombok.EqualsAndHashCode;
/**
*
*
*
*
* @author jobob
* @since 2020-06-17
*/
@Data
@EqualsAndHashCode(callSuper = false)
public class Order implements Serializable {
private static final long serialVersionUID = 1L;
@TableId(value = "id", type = IdType.AUTO)
private Long id;
/**
* 订单名称
*/
private String name;
/**
* 下单时间
*/
private LocalDateTime orderCreatetime;
/**
* 订单状态 0 已经未支付 1已经支付 2已退单
*/
private Integer orderState;
/**
* 订单价格
*/
private Double orderMoney;
/**
* 商品ID
*/
private Integer commodityId;
}
package com.taotao.datasources_ds.stock.entity;
import java.io.Serializable;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import lombok.EqualsAndHashCode;
/**
*
*
*
*
* @author jobob
* @since 2020-06-17
*/
@Data
@EqualsAndHashCode(callSuper = false)
public class Stock implements Serializable {
private static final long serialVersionUID = 1L;
@TableId(value = "id", type = IdType.AUTO)
private Long id;
/**
* 商品ID
*/
private Integer commodityId;
/**
* 库存余额
*/
private Integer stock;
}
5，mapper
package com.taotao.datasources_ds.order.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.taotao.datasources_ds.order.entity.Order;
import org.apache.ibatis.annotations.Mapper;
/**
*
* Mapper 接口
*
*
* @author jobob
* @since 2020-06-17
*/
@Mapper
public interface OrderMapper extends BaseMapper {
}
package com.taotao.datasources_ds.stock.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.taotao.datasources_ds.stock.entity.Stock;
/**
*
* Mapper 接口
*
*
* @author jobob
* @since 2020-06-17
*/
public interface StockMapper extends BaseMapper {
}
6，service
package com.taotao.datasources_ds.order.service.impl;
import com.baomidou.dynamic.datasource.annotation.DS;
import com.baomidou.mybatisplus.extension.service.IService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.taotao.datasources_ds.order.entity.Order;
import com.taotao.datasources_ds.order.mapper.OrderMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
*
* 服务实现类
*
*
* @author jobob
* @since 2020-06-17
*/
@RestController
@DS("itmayidu-order")
public class OrderServiceImpl {
@Autowired
private OrderMapper orderMapper;
@GetMapping("/findByorderId")
public Order findByorderId(Long id){
Order order= orderMapper.selectById(id);
return order;
}
}
package com.taotao.datasources_ds.stock.service.impl;
import com.baomidou.dynamic.datasource.annotation.DS;
import com.baomidou.mybatisplus.extension.service.IService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.taotao.datasources_ds.stock.entity.Stock;
import com.taotao.datasources_ds.stock.mapper.StockMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
*
* 服务实现类
*
*
* @author jobob
* @since 2020-06-17
*/
@RestController
@DS(value = "itmayidu-stock")
public class StockServiceImpl {
@Autowired
private StockMapper stockMapper;
@GetMapping("/findByuserId")
public Stock findByuserId(Long userid){
return stockMapper.selectById(userid);
}
}